Oilon RE 28 05, Инструкция по установке и эксплуатации

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The sensor cable is approximately 4.5 m long. The sensor probe’s diameter is 6 mm
and length 50 mm.
The cable can be extended if required. Use a regular insulated copper twin cable for
connecting the cable and extending the cable (0.5 mm
2
, length < 40 m).
● Join or splice the cable ends in a way that causes no additional electrical resistance
in the wires.
● Protect the joint against moisture and oxidation.
If the heat pump will not be used for heating a buffer tank (and the sensor will not be
installed), disconnect the sensor’s wires from the heat pump’s control cabinet and
protect the bare wire ends. You can otherwise leave the sensor in place.
3.4 Flow temperature sensor for heating circuit 1
Installation
In single-unit RE heat pumps, the heating circuit 1 flow sensor (B1) is used to control
the circuit’s control valve (Y1/Y2). In two-unit configurations, the sensor is installed in a
the cascade’s shared flow line (sensor marking: B10; see the details at the end of this
section).
The sensor can be installed in the heating circuit’s flow line, even if there is no valve
to be controlled by the heat pump; this will allow the sensor’s reading to be viewed
through the automation system.
● If you do not install the sensor in the flow line, disconnect the sensor’s wires from
the heat pump’s switchboard and protect the bare wire ends.
● You can otherwise leave the sensor in place.
Install the sensor in the heating circuit flow line as indicated in the piping diagram.
Place the sensor in a way that allows it to measure the temperature in the flow line as
accurately as possible.
Install the sensor 0.5–2.0 m downstream from the control valve. Install the sensor
preferably downstream from the circulation pump. If the sensor is too close to the
valve, its readings will be inaccurate, and placing the sensor too far downstream will
cause harmful control delay.
Attach the sensor to a metallic pipe surface or in a metallic sensor pocket in the pipe.
Surface installation
● Attach the sensor firmly and securely against the pipe surface along the entire
length of the metal sleeve covering the sensor probe.
● Finish by adding thermal insulation to insulate the sensor from ambient air
temperature.
● If necessary, use thermal paste between the sensor probe and the pipe surface.
● It is advisable to attach the sensor along the pipe surface at the 3 o’clock or 9
o’clock position.
Installation in a sensor pocket
Iinstall the sensor in a pocket intended for 6 mm probes.
M8009 2147EN 17 (74)